Beers men bring over a girl's apartment as a peace offering when their sole intention of coming over is to have sex. If you look in a girl's fridge and there are random singles of different beers, chances are she has had numerous men visit her humble abode.

"I arrived at a chick's house carrying a six-pack of fuck beers; I could tell she hadn't been fucked since last summer...when I opened her fridge there were two Sam Summer's and a BL Lime on the side door."